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(No Model.)

A. G. HILL,

DISK HARROW. No. 464,317. Patented Dec. 1, 1891.

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4 UNITED STATES PATENT O FICE;

ANDREW GEORGE HILL, or PRESCOTT, CANADA.

DISK HARROW.

SPECIFICATION forming part of Letters Patent No. 464,317, dated December 1891. Application filed December 22, 1890- Serlal No. 375,420; (No model.) i

To all whom it may concern:

Be it known that I, ANDREW GEORGE HILL, a citizen of the United States, and a resident of the city of Prescott,in the Province of Ontario and Dominion of Canada, have invented certain new and useful Improvements in Disk Harrows, of which the following is a specification, reference being had to the drawings forming part thereof.

This invention principally relates to, first, in a disk harrow, the combination of a main beam down-hanger containing a curved and hooked lower end with a disk-gang-axle j ournal containing a loop on its underneath side for engaging with said hook end and a lug on its upper side, and a casting capable of vertical movement upon the down-hanger having a recess on its lower side for retaining the lug of the disk-gang-axle journal; second, in a disk harrow, the combination, with a mainbeam down-hanger contained on the lower portion of the hanger, of a casting removable from the upper portion of the hanger and containing means to aid in retaining the journal of the disk-gang axle on the lower portion of the hanger, the hanger constructed at its lower end of a curved shape.

In the drawings, Figure 1 is a rear View of a down-hanger and of a portion of the diskgang connected therewith; and Fig. 2 is a vertical cross-section of the same, taken in the line a: of Fig. 1.

a. is one of two castings bolted to theunderneath side of the main beam of the harrow. The one shown is for the left-hand downhanger to be attached to.

b is the down-hanger, the upper end of which is bolted to the casting a by the bolt 0. Y

The eye of this bolt, facing to the rear, serves as a means for connecting one end of the scraper-beam link. The lower portion d of the down-hanger is curved rearwardly, and at its extreme lower end e downwardly, so as to partly embrace and retain the journal f, Within which revolves the disk-gang axle g. The journal forming a bearing for this axle has an eye 72, at its lower portion, through which the end c of the hanger passes. At its upper portion it has a lug 11, which is retained in a recess of a casting j, containing a hollow stem is, through which latter passes the up per portion of the hanger b. A set-screw Zon thehollow stem it serves to lock this movable casting j in its proper position on the hanger that it may retain the journal on the lower portion of the hanger.

When it is desired to remove the journal from the down-hanger, the set-screw Zis unscrewed, and the casting 3' can then be moved upon the down-hanger, and thus by releasing the lug ithe journal can be turned in a downward direction, thereby releasing the eye h from the-hOok-shaped lower end e of the downhanger.

In case of breakage of the casting j the upper end of the down-hanger can be drawn through its hollow stem k, after releasing the down-hanger from the casting a, so as to replace such casting with another. In order to permit of the vertical movement of the ends of the disk-gang, there is an elongated recess m in the casting. This limits the vertical play -or movement of the disk-gang. The

width of this recess in the other directionthe axle-bearing is lubricated.

The disks 0 0, 850., are rigidly connected to spacing-spools p p, which latter in turn are rigidly secured to the axle of the disk-gang turning within the journal. The upper portion of the down-hanger should be inclined, the left-hand one to the left, as shown in the drawings, and the right-hand one to the right, in order that the outer portions of the disks may be equally distant from the down-hanger as they are being rotated. This permits of the inner and outer ends of the disk-gang to alternately rise and fall without coming into contact with the upper portion of the downhanger.

On the front side of the casting I may place a projecting lug g. This will prevent the hooked end of the disk-gang brace r from coming out of the eye 8 on the down-hanger during the working of the harrow.

I claim-=- 1. In a disk harrow, the combination of a down-hanger containing a curved and hooked lower end with a disk-gang-axle journal con taining a loop in its underneath side for engaging with. said hook end, and a lug on its upper side, and a casting capable of vertical movement upon the down-hanger, having a recess on its lower side for retaining the lug of the disk-gang-axle journal, substantially as described.

2. I11 a disk barrow, the combination of a main beam, a down-hanger provided with a casting on the lower portion thereof, said casting being removable from the upper portion of the same and constructed to aid in retaining the journal of the disk-gang in engagement with the curved lower end of said hanger, substantially as described.

ANDREW GEORGE HILL. 

